/* Unified navigation — shared by home / wiki / updates / console. */
.nav{--nav-bg:#1b2021;--nav-line:#394345;--nav-text:#f2f2ec;--nav-muted:#a9b7b5;--nav-accent:#e4cf91;
  position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:26px;height:60px;
  padding:0 clamp(16px,4vw,44px);font-family:Inter,"Microsoft YaHei",system-ui,sans-serif;
  background:var(--nav-bg);color:var(--nav-text);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--nav-line)}
.nav-brand{display:flex;align-items:center;gap:10px;color:var(--nav-text);text-decoration:none;flex-shrink:0}
.nav-brand img{image-rendering:pixelated;border-radius:6px}
.nav-brand strong{font-size:17px;font-weight:700;letter-spacing:.2px}
.nav-tag{font:10px Consolas,monospace;color:var(--nav-muted);border-left:1px solid var(--nav-line);padding-left:11px;letter-spacing:1px}
.nav-links{display:flex;gap:2px;font-size:13.5px}
.nav-links a{display:flex;align-items:center;height:60px;padding:0 13px;color:var(--nav-muted);white-space:nowrap;
  border-bottom:2px solid transparent;transition:color .15s,border-color .15s}
.nav-links a:hover{color:var(--nav-text)}
.nav-links a.active{color:var(--nav-accent);border-bottom-color:var(--nav-accent);font-weight:600}
.nav-side{margin-left:auto;display:flex;align-items:center;gap:14px;flex-shrink:1;min-width:0}
.nav-plain{border:0;background:transparent;color:var(--nav-muted);
  font:500 12.5px/1.4 Inter,"Microsoft YaHei",system-ui,sans-serif;padding:8px 2px;cursor:pointer;white-space:nowrap}
.nav-plain:hover{color:var(--nav-text)}
#menu-toggle{display:none}

/* Search (wiki). */
.search-label{display:flex;gap:10px;align-items:center;position:relative;min-width:0}
.search-label>span:first-child{font-size:12px;color:var(--nav-muted);white-space:nowrap}
.search-label input{width:230px;max-width:100%;min-width:110px;height:34px;padding:0 14px;border:1px solid var(--nav-line);border-radius:17px;
  background:#252c2d;color:var(--nav-text);font:inherit;font-size:13px;
  transition:width .2s ease,border-color .15s,background .15s,box-shadow .15s}
.search-label input::placeholder{color:var(--nav-muted)}
.search-label input:focus{outline:none;width:290px;border-color:var(--nav-accent);
  background:#293233;box-shadow:0 0 0 3px #e4cf9133}
.search-hint{position:absolute;top:calc(100% + 8px);right:0;font-size:11px;color:var(--nav-muted);
  background:#252c2d;border:1px solid var(--nav-line);border-radius:8px;padding:4px 10px;
  box-shadow:0 4px 14px rgba(24,44,32,.1);opacity:0;transform:translateY(-4px);pointer-events:none;
  transition:opacity .15s,transform .15s;white-space:nowrap}
.search-label:focus-within .search-hint{opacity:1;transform:none}

/* Account chip. */
#nav-account{display:flex;align-items:center;gap:14px;min-width:0}
.nav-user{display:flex;align-items:center;gap:9px;color:var(--nav-text);text-decoration:none;font-size:13px;font-weight:550;padding:4px 1px;min-width:0}
.nav-user:hover .nav-username{color:var(--nav-accent)}
.nav-avatar{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;color:#fff;font-size:12px;font-weight:650;flex-shrink:0;letter-spacing:0}
.nav-username{max-width:120px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;transition:color .15s}
.nav-login{display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:4px;background:var(--nav-accent);color:#202526;font-size:12.5px;font-weight:600;text-decoration:none;transition:background .15s}
.nav-login:hover{background:#f1dfa9;color:#202526}

/* The header keeps the same palette when content switches theme. */
html.dark .search-hint{box-shadow:0 4px 14px rgba(0,0,0,.4)}

@media(max-width:1100px){
  .search-label>span:first-child{display:none}
  .search-label input,.search-label input:focus{width:180px}
}
@media(max-width:800px){
  .nav{gap:14px;padding:0 16px}
  .nav-tag{display:none}
  .nav-links{gap:0;font-size:12.5px}
  .nav-links a{padding:0 8px}
  .nav.has-search{flex-wrap:wrap;height:104px;align-content:center;gap:0}
  .nav.has-search .nav-links{display:none}
  .nav.has-search #menu-toggle{display:block}
  .search-label{order:9;flex-basis:100%;margin:0}
  .search-hint{display:none}
  .search-label input,.search-label input:focus{width:100%;min-width:0}
  .nav-username{max-width:80px;font-size:12px}
}
@media(max-width:500px){
  .nav{flex-wrap:wrap;height:auto;min-height:60px;padding-top:10px;padding-bottom:10px}
  .nav-links{order:9;flex-basis:100%;justify-content:flex-end;margin-top:8px}
  .nav-links a{height:auto;padding:10px 8px}
}
@media(prefers-reduced-motion:reduce){.search-label input,.search-hint{transition:none}}